Combination-square.



PATENTED OCT. 22, 1907.

W. ROBERTS. BINATION SQUARE. cum; FILED MB; 8, 1907.

War -/?a er-s.

witness I I I WARNER ROBERTS, OF TALOGA, OKLAHOMA TERRITORY.

COMBINATION-SQUARE Specification of Letters Patent.

Patented Oct. 22, 1907.

Application filed February 8, 1907. Serial No. 356,462,

To all whom it may concern:

Be it known that I, WARNER Ronnn'rs, a citizen of the United States,residing at Taloga in the county of Dewey and 'l.erritory of Oklahoma,have invented cer tain new and useful Improvements in Combination-Squares, of which the following is a specification.

The object of my invention is to provide an improved combination of atrue tri-Ineter and polygon square, a T-bevel protractor andinclinometer, being adapted for all the uses to which any one of thesedevices is individually designed, and embodying them all in the onearticle which is of simple and durable construction, and which will beefiicient in operation and susceptible of convenient manipulation.

The invention consists in certain constructions and arrangements of theparts hereinafter described and particularly pointed out in the appendedclaims.

For a full description of the invention and the merits thereof and alsoto acquire a knowledge of the details of construction of the means foreffecting the result, reference is to be had to the-followingdescription and accompanying drawings, in which:

Figure 1 is a plan view of my improved combination square. Fig. 2 is anedge view thereof, partly broken away.

Corresponding and like parts are referred to in the followingdescription and indicated in all the views of the drawings by the samereference characters.

Referring to the drawings the numeral 1 designates the stock which ispivotally mounted near one end at the vertex of the right angle triangle2 which is provided as shown with the graduated blade 3 laid off inlinear graduations.

Within the triangle 2 and preferably formed inte grally therewith isuniformly graduated segment 4 laid off at its outer edge in degreegraduations up to 90 and laid off at its inner edge with the wordstriangle, miter, polygon, hexagon, heptagon, etc, as shown.

The stock 1 is provided in coincidence with the segment 2, with anopening 5, from the opposite sides of which V shaped tongues 6 projectinwardly as shown, said tongues being in longitudinal alinement andserving as pointers for the graduations on the segment 4. In order tosecure the stock in different adjusted positions with respect to thetriangle 2, the said tongue is formed with another opening 7 between theopening and the pivot point 1*, and in this opening 7 is located aclamping screw 8 designed to work through the solid portion of the stockwhich separates the two openings 5 and 7, and impinging against theinner edge of the segment 4 so as to secure the stock and triangletogether.

Preferably, the stock carries a spirit level 9 which is detachablysecured thereto by means of screws or the like in the opening 7.

At the vertices of the angles between the stock or handle 1 and thegraduated blade 3 when the stock assumes a true perpendicular positionwith respect to the said blade, I preferably form semicircular recesses10 in the side edges of the stock, so as to enable the operator whensquaring across his work, to mark with a pencil true up to the face lineof the'stock. The sides of the triangle or frame 2 are also providedwith small notches or recesses 11 at the ends of the segment 4.

From the foregoing description in connection with the accompanyingdrawings, it will be seen that I have provided an improved combinationsquare of the character above set forth, which is simple in constructionand which is adapted for all the diversified uses to which a device ofthis type may he put.

Having thus described the invention, what is claimed as new is:

1. As a new article of manufacture, a right angle triangle frame havingits hypotenuse side provided with gradnations, a 90 degree segmentsecured within the frame, a stock pivotally connected to the frame atthe vertex of the right angle thereof, and means for holding said stockat different angles with respect to the frame, the stock being providedin its side edges and at the points where said side edges intersect thehypotenuse side of the frame when the stock and said side are at rightangles with respect to each other, with notches for the purposespecified, and the sides of the frame being also provided at the ends ofthe segment with similar notches.

2. A device of the character described, comprising a right angletriangle frame provided with linear graduations, a ninety degree segmentmounted within the frame, a stock pivotally connected at one end to saidframe at the vertex of the right angle thereof, said stock beingprovided with an opening 5 registering with the segment and with adistinct opening 7 between the opening 5 and the pivot point, and aclamping screw working through the stock from the opening 7 and adaptedto impinge against the inner side of the segment whereby to clamp thestock in different positions with respect to the frame.

In testimony whereof I athx my signature in presence of two witnesses.

, WARNER ROBERTS. [n s.] Witnesses:

J. E. Rnnnn,

A. W. DUNNAGAN.

